ENH: write format which is backwards-compatible with HDF5 version 1.8
ENH: write format which is backwards-compatible with HDF5 version 1.8

Change-Id: I13b82d5dede4930b7467f67ee19a1def1f19fa14

Kitware/ITK,vfonov/ITK,spinicist/ITK,richardbeare/ITK,LucasGandel/ITK,thewtex/ITK,spinicist/ITK,vfonov/ITK,vfonov/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,vfonov/ITK,spinicist/ITK,LucasGandel/ITK,vfonov/ITK,vfonov/ITK,blowekamp/ITK,stnava/ITK,blowekamp/ITK,richardbeare/ITK,spinicist/ITK,LucasGandel/ITK,spinicist/ITK,Kitware/ITK,fbudin69500/ITK,spinicist/ITK,vfonov/ITK,richardbeare/ITK,LucasGandel/ITK,malaterre/ITK,spinicist/ITK,blowekamp/ITK,malaterre/ITK,stnava/ITK,InsightSoftwareConsortium/ITK,InsightSoftwareConsortium/ITK,malaterre/ITK,fbudin69500/ITK,hjmjohnson/ITK,LucasGandel/ITK,spinicist/ITK,hjmjohnson/ITK,BRAINSia/ITK,vfonov/ITK,stnava/ITK,richardbeare/ITK,stnava/ITK,Kitware/ITK,blowekamp/ITK,thewtex/ITK,hjmjohnson/ITK,thewtex/ITK,thewtex/ITK,BRAINSia/ITK,malaterre/ITK,InsightSoftwareConsortium/ITK,stnava/ITK,blowekamp/ITK,thewtex/ITK,InsightSoftwareConsortium/ITK,Kitware/ITK,richardbeare/ITK,BRAINSia/ITK,fbudin69500/ITK,LucasGandel/ITK,stnava/ITK,InsightSoftwareConsortium/ITK,hjmjohnson/ITK,fbudin69500/ITK,malaterre/ITK,fbudin69500/ITK,InsightSoftwareConsortium/ITK,BRAINSia/ITK,BRAINSia/ITK,fbudin69500/ITK,LucasGandel/ITK,stnava/ITK,malaterre/ITK,stnava/ITK,Kitware/ITK,hjmjohnson/ITK,richardbeare/ITK,blowekamp/ITK,richardbeare/ITK,LucasGandel/ITK,hjmjohnson/ITK,hjmjohnson/ITK,thewtex/ITK,blowekamp/ITK,BRAINSia/ITK,fbudin69500/ITK,blowekamp/ITK,stnava/ITK,spinicist/ITK,vfonov/ITK,BRAINSia/ITK,thewtex/ITK,malaterre/ITK,Kitware/ITK,fbudin69500/ITK,malaterre/ITK,malaterre/ITK